This is the last 'bug' that I have not yet addressed and fixed in the RV-12.
What seemed like radio noise..... no noise until the throttle is well advanced during take off. Thought it was through the radio, but it does not change if the radio is turned off. When in slow flight with reduced RPM's the noise is gone; its only during higher rpm operation...the sound is something like a crackling, popping, snapping, on and off sound. Its not so bad that I can't live with it, but want to eliminate it.
I have some ferrite units that 'snap' around wires coming that I will apply to all the leads to/from the rectifier and see if that help.
Also have not investigated electromagnetic induction into the leads to the intercom yet, but will await the ferrite application...if that doesn't work, then I will try attacking the intercom.
Also I might put a ferrite unit on the Zulu headset just prior to the control unit too.
The part is seems odd isn't noise being generated as much as it is that it only happens during higher rpm operation. Once it starts it is constant and does not vary with intensity or rapidity as rpm is increased/decreased until I get at under perhaps 4000 ....when its there, its constant.
Any suggestions?
What seemed like radio noise..... no noise until the throttle is well advanced during take off. Thought it was through the radio, but it does not change if the radio is turned off. When in slow flight with reduced RPM's the noise is gone; its only during higher rpm operation...the sound is something like a crackling, popping, snapping, on and off sound. Its not so bad that I can't live with it, but want to eliminate it.
I have some ferrite units that 'snap' around wires coming that I will apply to all the leads to/from the rectifier and see if that help.
Also have not investigated electromagnetic induction into the leads to the intercom yet, but will await the ferrite application...if that doesn't work, then I will try attacking the intercom.
Also I might put a ferrite unit on the Zulu headset just prior to the control unit too.
The part is seems odd isn't noise being generated as much as it is that it only happens during higher rpm operation. Once it starts it is constant and does not vary with intensity or rapidity as rpm is increased/decreased until I get at under perhaps 4000 ....when its there, its constant.
Any suggestions?